Panasonic SL-DV100, Service Manual

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Recording Time
To meet the demands of a Hollywood film production company, one film must fit onto a single disc while keeping the movie's image quality and audio
quality high.
To achieve this, we compress video images using MPEG2 technology, sub-video
images (superimposed) using run length coding compression; produce high-quality audio using linear PCM, Dolby Digital AC-3, DTS and MPEG
audio; and make the surround system recordable. The resulting recording time is about 133 minutes.
Approximately 93% of Hollywood movies can each be recorded on one disc.
Video image 3.5 Mbit / sec
Audio 1152 kbit / sec
Sub-video image 40 kbit / sec
Total 4.692 Mbit / sec
The recording capacity of a disc is 4.7 GB, so:
4700 Mbyte
q
8
s
(4.692 Mbit/sec
q
60 second ) = 133.5 minutes
Therefore, one side of a disc can record about 133 minutes.
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Key of High Image Quality
Thanks to MPEG2, the digital image compression technology, you can enjoy a DVD-Video movie which features the same image quality as that of
a film shown in a theater. MPEG2 is the technology that superseded the MPEG1, which is employed in video CDs. MPEG2 technology produces a
higher level of image quality.
DVD Video-CD
Video compression MPEG2 MPEG1
Number of pixels (NTSC) 720
q
480 352
q
240
Number of pixels (PAL) 720
q
576 352
q
288
Holizontal resolution more than 500 lines 240 lines
Cording bit rate variable / constant constant
Frame rate 30 frame / sec 30 frame / sec
(60 field / sec) –––
Max. data transfer late 10.08 Mbit / s 1.15 Mbit / s
Average date transfer rate 3.5 Mbit / s 1.15 Mbit / s
Playback time 133 min. (1 layer / 1 sided) 74 minutes
480 min. (2 layer / 2 sided) –––
subtitles 32 subtitles –––
other multi aspect ratio –––
For example, below is one of the actually bit rate of DVD.
SL-DV100
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